<!doctype html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width,initial-scale=1">
  <title>函数画图 Demo</title>
  <link rel="stylesheet" href="Functool.min.css">

  <style>
    #functool {
      width: 500px;
    }
  </style>
</head>

<body>
  <div id="functool"></div>
  <script src="Functool.min.js"></script>
  <script>
    new tool(
      {
        root: document.querySelector('#functool')
      }
    )
  </script>
</body>

</html>